2CarPros - Car Questions & Answers

1998 Jeep Grand Cherokee Repair Question


Topics covered: Compression, Valves, Compression test.
Mileage: 130 miles.

Asked on May 7, 2012

1998 Jeep Grand Cherokee, No compression on #1 Cyl,

No compression on Cyl #1, oil in the sparkplug hole, is this a piston replacement or possibly a problem in the head?
Avatar Asked by brdsmith15

Answer

Replied on May 7, 2012

Could be the valves, rings and cylinder wear-I recommend you get a cylinder leakage test to confirm where its leaking at

Tiny Answered by rasmataz
68 questions asked
Replied on May 7, 2012

leakdown test?

Tiny Response from brdsmith15
8 questions asked
Replied on May 7, 2012

You can do a wet compression test, that is add a small amount of oil into the cylinder 1 tea spoon is plenty are re test comps, if comps come up it will be faulty rings, if not valves, the oil will seal the rings for the test so if comp is lost via the rings the comps will come up, the excess oil will burn off when you start he car up again.

Tiny Answered by mhpautos (expert)
26,869 answers provided